Physical and chemical indicators of magnesia iron spinel brick
  • Time:Aug 30, 2023
  • Views: 5

  Magnesia Iron Spinel Brick is a high-temperature refractory material composed of a spinel phase composed of magnesium oxide (MgO) and iron oxide (Fe2O3). The following are common physical and chemical indicators of magnesia-iron spinel bricks:

  1、chemical composition:

       1.1 MgO content: usually between 60-85%, the specific content varies according to different manufacturers and products.

  1.2 Fe2O3 content: usually controlled between 5-25%.

  2. Common physical properties:

  2.1 Bulk density: usually between 3.0-3.7 g/cm³, the specific value depends on the formula and production process.

  2.2 Compressive strength: generally between 40-100 MPa, the strength can be adjusted by adding suitable aggregates and binders.

  2.3 Mass Loss: Mass loss tests are performed at elevated temperatures to assess the resistance of bricks to chemical attack.

  2.4 Coefficient of Thermal Expansion: A measure of how much a material expands linearly as it heats up.

  2.5 Load softening temperature: refers to the temperature at which a material begins to soften under a specific load.

  3. Thermal performance:

  3.1 Refractoriness (fire resistance limit): refers to the ability of a material to resist high temperature environments. Magnesia-iron spinel bricks have good refractory properties and can usually be used at high temperatures above 1500°C.

  3.2 Thermal conductivity: Measures the ability of a material to conduct heat. For bricks, it is generally between 1-3 W/m·K.

       Physical and chemical indicators of magnesia-iron spinel bricks produced by zhenjin

Brand Grade
Mgo ≥88 ≥85
Fe,0, 3.5-4.5 3.0-4.0
AlL03 3.5-4.5 ≥8
Sio2 ≤0.8 ≤0.7
cao ≤1.2 ≤1.2
Bulk density(g/cm3) ≥2.97 ≥2.95
Apparent porosity(%) ≤17 ≤17
Normal temperature compressive strength(MPa) ≥70 ≥70
Load softening start temperature (0.2MPa,to.6) ≥1700 ≥1700
Thermal shock stability, times (1100℃, water cooling) ≥10 ≥12

  It should be noted that the specific physical and chemical indicators may vary due to different manufacturers, product specifications and application requirements. Therefore, when selecting and using magnesia-iron spinel bricks, it is recommended to refer to the technical data and technical specification sheets provided by the supplier to ensure that they meet specific engineering needs.

Related products
More Products →

dense tissue structure

flexibility corrosion

Refractoriness under load high

High temperature strength

Flexibility corrosion

Erosion resistance

Dense structure

Refractoriness under load high

related articles
more articles
The lining of a cement kiln is mainly affected by factors such as high temperature, thermal shock, and alkalinity, so it needs to have certain fire re
Magnesia-alumina bricks and magnesia-iron bricks are two commonly used refractory materials. What is the difference between magnesia-alumina bricks an
High alumina brick is a commonly used refractory material with excellent high temperature resistance and corrosion resistance. The following are some
Magnesia chrome brick is a refractory material made of magnesium oxide (MgO) and chromium oxide (Cr2O3) as the main components. The following is an in
Magnesia brick is a common refractory material made of magnesium oxide (MgO) as the main component. The following are some common physical and chemica
Heavy castable is a high-density, high-refractory material that is often used as thermal insulation for various industrial equipment and structures. T

Please leave us a message and look forward to knowing your thoughts


Want an immediate response?

You can consult online or write an email, We deal with your needs immediately

© Zhengzhou Zhenjin Refractory Materials Co.,Ltd.